How do you make an already stellar song sound even more stellar? You add something to it that not only differentiates it from the previous version but also makes it stand out even more on its musical merits. That’s exactly what abstracts has done with their tune “Siena.” Listeners of abstracts would be correct in stating that “Siena” was originally released as part of the Japanese group’s 2014 self-titled debut record. The band has successfully pulled that song from the past into the present, and put a whole new spin on it, teaming up with Al Boltz, singer of A Scent Like Wolves, who provides some impressive guest vocals. Boltz really shines on this newly reinvented track, adding his trademark voice to the proceedings, rounded out by some punishing guitar riffs, brutal breakdowns, and big,...